{"instruction": "You are an expert in relationship extraction. Please extract relationship triples that match the schema definition from the input. Return an empty list for relationships that do not exist. Please respond in the format of a JSON string.", "schema": ["entity origin", "else"], "input": "infectious mononucleosis due to the epstein-barr virus causes exudative tonsillitis or pharyngitis in about one-half of cases ."}
{"entity origin": [], "else": []}